Commit | Line | Data |
---|---|---|
19022aaa SH |
1 | /* |
2 | * i.MX drm driver - parallel display implementation | |
3 | * | |
4 | * Copyright (C) 2012 Sascha Hauer, Pengutronix | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | |
18 | * MA 02110-1301, USA. | |
19 | */ | |
20 | ||
17b5001b | 21 | #include <linux/component.h> |
19022aaa SH |
22 | #include <linux/module.h> |
23 | #include <drm/drmP.h> | |
24 | #include <drm/drm_fb_helper.h> | |
25 | #include <drm/drm_crtc_helper.h> | |
628f435b | 26 | #include <drm/drm_panel.h> |
19022aaa | 27 | #include <linux/videodev2.h> |
075c457b | 28 | #include <video/of_display_timing.h> |
19022aaa SH |
29 | |
30 | #include "imx-drm.h" | |
31 | ||
32 | #define con_to_imxpd(x) container_of(x, struct imx_parallel_display, connector) | |
33 | #define enc_to_imxpd(x) container_of(x, struct imx_parallel_display, encoder) | |
34 | ||
35 | struct imx_parallel_display { | |
36 | struct drm_connector connector; | |
19022aaa | 37 | struct drm_encoder encoder; |
19022aaa SH |
38 | struct device *dev; |
39 | void *edid; | |
40 | int edid_len; | |
41 | u32 interface_pix_fmt; | |
42 | int mode_valid; | |
43 | struct drm_display_mode mode; | |
628f435b | 44 | struct drm_panel *panel; |
19022aaa SH |
45 | }; |
46 | ||
47 | static enum drm_connector_status imx_pd_connector_detect( | |
48 | struct drm_connector *connector, bool force) | |
49 | { | |
50 | return connector_status_connected; | |
51 | } | |
52 | ||
19022aaa SH |
53 | static int imx_pd_connector_get_modes(struct drm_connector *connector) |
54 | { | |
55 | struct imx_parallel_display *imxpd = con_to_imxpd(connector); | |
afb12edf | 56 | struct device_node *np = imxpd->dev->of_node; |
19022aaa SH |
57 | int num_modes = 0; |
58 | ||
628f435b PZ |
59 | if (imxpd->panel && imxpd->panel->funcs && |
60 | imxpd->panel->funcs->get_modes) { | |
61 | num_modes = imxpd->panel->funcs->get_modes(imxpd->panel); | |
62 | if (num_modes > 0) | |
63 | return num_modes; | |
64 | } | |
65 | ||
19022aaa SH |
66 | if (imxpd->edid) { |
67 | drm_mode_connector_update_edid_property(connector, imxpd->edid); | |
68 | num_modes = drm_add_edid_modes(connector, imxpd->edid); | |
69 | } | |
70 | ||
71 | if (imxpd->mode_valid) { | |
72 | struct drm_display_mode *mode = drm_mode_create(connector->dev); | |
39dcf4f7 FE |
73 | if (!mode) |
74 | return -EINVAL; | |
19022aaa SH |
75 | drm_mode_copy(mode, &imxpd->mode); |
76 | mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, | |
afb12edf MV |
77 | drm_mode_probed_add(connector, mode); |
78 | num_modes++; | |
79 | } | |
80 | ||
81 | if (np) { | |
82 | struct drm_display_mode *mode = drm_mode_create(connector->dev); | |
39dcf4f7 FE |
83 | if (!mode) |
84 | return -EINVAL; | |
075c457b | 85 | of_get_drm_display_mode(np, &imxpd->mode, OF_USE_NATIVE_MODE); |
afb12edf MV |
86 | drm_mode_copy(mode, &imxpd->mode); |
87 | mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, | |
19022aaa SH |
88 | drm_mode_probed_add(connector, mode); |
89 | num_modes++; | |
90 | } | |
91 | ||
92 | return num_modes; | |
93 | } | |
94 | ||
19022aaa SH |
95 | static struct drm_encoder *imx_pd_connector_best_encoder( |
96 | struct drm_connector *connector) | |
97 | { | |
98 | struct imx_parallel_display *imxpd = con_to_imxpd(connector); | |
99 | ||
100 | return &imxpd->encoder; | |
101 | } | |
102 | ||
103 | static void imx_pd_encoder_dpms(struct drm_encoder *encoder, int mode) | |
104 | { | |
628f435b PZ |
105 | struct imx_parallel_display *imxpd = enc_to_imxpd(encoder); |
106 | ||
107 | if (mode != DRM_MODE_DPMS_ON) | |
108 | drm_panel_disable(imxpd->panel); | |
109 | else | |
110 | drm_panel_enable(imxpd->panel); | |
19022aaa SH |
111 | } |
112 | ||
113 | static bool imx_pd_encoder_mode_fixup(struct drm_encoder *encoder, | |
114 | const struct drm_display_mode *mode, | |
115 | struct drm_display_mode *adjusted_mode) | |
116 | { | |
117 | return true; | |
118 | } | |
119 | ||
120 | static void imx_pd_encoder_prepare(struct drm_encoder *encoder) | |
121 | { | |
122 | struct imx_parallel_display *imxpd = enc_to_imxpd(encoder); | |
123 | ||
f2d66aad | 124 | imx_drm_panel_format(encoder, imxpd->interface_pix_fmt); |
19022aaa SH |
125 | } |
126 | ||
127 | static void imx_pd_encoder_commit(struct drm_encoder *encoder) | |
128 | { | |
129 | } | |
130 | ||
131 | static void imx_pd_encoder_mode_set(struct drm_encoder *encoder, | |
132 | struct drm_display_mode *mode, | |
133 | struct drm_display_mode *adjusted_mode) | |
134 | { | |
135 | } | |
136 | ||
137 | static void imx_pd_encoder_disable(struct drm_encoder *encoder) | |
138 | { | |
139 | } | |
140 | ||
19022aaa SH |
141 | static struct drm_connector_funcs imx_pd_connector_funcs = { |
142 | .dpms = drm_helper_connector_dpms, | |
143 | .fill_modes = drm_helper_probe_single_connector_modes, | |
144 | .detect = imx_pd_connector_detect, | |
1b3f7675 | 145 | .destroy = imx_drm_connector_destroy, |
19022aaa SH |
146 | }; |
147 | ||
148 | static struct drm_connector_helper_funcs imx_pd_connector_helper_funcs = { | |
149 | .get_modes = imx_pd_connector_get_modes, | |
150 | .best_encoder = imx_pd_connector_best_encoder, | |
19022aaa SH |
151 | }; |
152 | ||
153 | static struct drm_encoder_funcs imx_pd_encoder_funcs = { | |
1b3f7675 | 154 | .destroy = imx_drm_encoder_destroy, |
19022aaa SH |
155 | }; |
156 | ||
157 | static struct drm_encoder_helper_funcs imx_pd_encoder_helper_funcs = { | |
158 | .dpms = imx_pd_encoder_dpms, | |
159 | .mode_fixup = imx_pd_encoder_mode_fixup, | |
160 | .prepare = imx_pd_encoder_prepare, | |
161 | .commit = imx_pd_encoder_commit, | |
162 | .mode_set = imx_pd_encoder_mode_set, | |
163 | .disable = imx_pd_encoder_disable, | |
164 | }; | |
165 | ||
1b3f7675 RK |
166 | static int imx_pd_register(struct drm_device *drm, |
167 | struct imx_parallel_display *imxpd) | |
19022aaa SH |
168 | { |
169 | int ret; | |
170 | ||
1b3f7675 RK |
171 | ret = imx_drm_encoder_parse_of(drm, &imxpd->encoder, |
172 | imxpd->dev->of_node); | |
173 | if (ret) | |
174 | return ret; | |
19022aaa SH |
175 | |
176 | drm_encoder_helper_add(&imxpd->encoder, &imx_pd_encoder_helper_funcs); | |
1b3f7675 RK |
177 | drm_encoder_init(drm, &imxpd->encoder, &imx_pd_encoder_funcs, |
178 | DRM_MODE_ENCODER_NONE); | |
19022aaa SH |
179 | |
180 | drm_connector_helper_add(&imxpd->connector, | |
181 | &imx_pd_connector_helper_funcs); | |
1b3f7675 RK |
182 | drm_connector_init(drm, &imxpd->connector, &imx_pd_connector_funcs, |
183 | DRM_MODE_CONNECTOR_VGA); | |
19022aaa | 184 | |
628f435b PZ |
185 | if (imxpd->panel) |
186 | drm_panel_attach(imxpd->panel, &imxpd->connector); | |
187 | ||
1b3f7675 | 188 | drm_mode_connector_attach_encoder(&imxpd->connector, &imxpd->encoder); |
19022aaa SH |
189 | |
190 | imxpd->connector.encoder = &imxpd->encoder; | |
191 | ||
192 | return 0; | |
193 | } | |
194 | ||
17b5001b | 195 | static int imx_pd_bind(struct device *dev, struct device *master, void *data) |
19022aaa | 196 | { |
1b3f7675 | 197 | struct drm_device *drm = data; |
17b5001b | 198 | struct device_node *np = dev->of_node; |
628f435b | 199 | struct device_node *panel_node; |
19022aaa SH |
200 | const u8 *edidp; |
201 | struct imx_parallel_display *imxpd; | |
202 | int ret; | |
203 | const char *fmt; | |
204 | ||
17b5001b | 205 | imxpd = devm_kzalloc(dev, sizeof(*imxpd), GFP_KERNEL); |
19022aaa SH |
206 | if (!imxpd) |
207 | return -ENOMEM; | |
208 | ||
209 | edidp = of_get_property(np, "edid", &imxpd->edid_len); | |
210 | if (edidp) | |
211 | imxpd->edid = kmemdup(edidp, imxpd->edid_len, GFP_KERNEL); | |
212 | ||
213 | ret = of_property_read_string(np, "interface-pix-fmt", &fmt); | |
214 | if (!ret) { | |
215 | if (!strcmp(fmt, "rgb24")) | |
216 | imxpd->interface_pix_fmt = V4L2_PIX_FMT_RGB24; | |
217 | else if (!strcmp(fmt, "rgb565")) | |
218 | imxpd->interface_pix_fmt = V4L2_PIX_FMT_RGB565; | |
7d0a66c0 MV |
219 | else if (!strcmp(fmt, "bgr666")) |
220 | imxpd->interface_pix_fmt = V4L2_PIX_FMT_BGR666; | |
19022aaa SH |
221 | } |
222 | ||
628f435b PZ |
223 | panel_node = of_parse_phandle(np, "fsl,panel", 0); |
224 | if (panel_node) | |
225 | imxpd->panel = of_drm_find_panel(panel_node); | |
226 | ||
17b5001b | 227 | imxpd->dev = dev; |
19022aaa | 228 | |
1b3f7675 | 229 | ret = imx_pd_register(drm, imxpd); |
19022aaa SH |
230 | if (ret) |
231 | return ret; | |
232 | ||
17b5001b | 233 | dev_set_drvdata(dev, imxpd); |
19022aaa SH |
234 | |
235 | return 0; | |
236 | } | |
237 | ||
17b5001b RK |
238 | static void imx_pd_unbind(struct device *dev, struct device *master, |
239 | void *data) | |
19022aaa | 240 | { |
17b5001b | 241 | struct imx_parallel_display *imxpd = dev_get_drvdata(dev); |
19022aaa | 242 | |
1b3f7675 RK |
243 | imxpd->encoder.funcs->destroy(&imxpd->encoder); |
244 | imxpd->connector.funcs->destroy(&imxpd->connector); | |
17b5001b | 245 | } |
19022aaa | 246 | |
17b5001b RK |
247 | static const struct component_ops imx_pd_ops = { |
248 | .bind = imx_pd_bind, | |
249 | .unbind = imx_pd_unbind, | |
250 | }; | |
251 | ||
252 | static int imx_pd_probe(struct platform_device *pdev) | |
253 | { | |
254 | return component_add(&pdev->dev, &imx_pd_ops); | |
255 | } | |
256 | ||
257 | static int imx_pd_remove(struct platform_device *pdev) | |
258 | { | |
259 | component_del(&pdev->dev, &imx_pd_ops); | |
19022aaa SH |
260 | return 0; |
261 | } | |
262 | ||
263 | static const struct of_device_id imx_pd_dt_ids[] = { | |
264 | { .compatible = "fsl,imx-parallel-display", }, | |
265 | { /* sentinel */ } | |
266 | }; | |
fa45f2c7 | 267 | MODULE_DEVICE_TABLE(of, imx_pd_dt_ids); |
19022aaa SH |
268 | |
269 | static struct platform_driver imx_pd_driver = { | |
270 | .probe = imx_pd_probe, | |
99c28f10 | 271 | .remove = imx_pd_remove, |
19022aaa SH |
272 | .driver = { |
273 | .of_match_table = imx_pd_dt_ids, | |
274 | .name = "imx-parallel-display", | |
275 | .owner = THIS_MODULE, | |
276 | }, | |
277 | }; | |
278 | ||
279 | module_platform_driver(imx_pd_driver); | |
280 | ||
281 | MODULE_DESCRIPTION("i.MX parallel display driver"); | |
282 | MODULE_AUTHOR("Sascha Hauer, Pengutronix"); | |
283 | MODULE_LICENSE("GPL"); | |
b2da05ff | 284 | MODULE_ALIAS("platform:imx-parallel-display"); |